Door-operating device.



A. MWLLER. DOOR OPERAEING DEVICE. APPucAnoN FILED MAR. 22, Isle.

Patented Jim. 2, 1917.

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.ALBERT MILLER, l0]!" ROCHESTER, MINNESOTA.

DOOR-OPERATIN G DEVICE.

Specication of Letters Patent.

Patented J an. 2, 1917.

Application filed March 22, 1916. Serial No. 85,851.

To all whom t may concern:

Be it known that I, ALBERT MILLER, a citizen of the United States, residing at Rochester, in the county of Olmsted and State of Minnesota, have invented certain new and useful Improvements in Door-Operating Devices, of which the following is aspeciication.

The. present invention relates to door operating devices and more particularly to automatic vehicle-operated means for controlling doors to buildings,y gateways, and the like, and the primary object of my invention is to provide in a door operating mechanism of this character a simple, durable and eii'ective structure for opening and closing the doors of a garage or the like. by

the garage.

Another object of my invention is to provide means for locking the doors or gates open or closed as the case may be.

A further object of my invention is to provide a door operating mechanism of the class described which may be applied to doors now in common use without the necessity of reconstructing the doo] or the building to which the device may be applied.

0f course, my applied to different uses but is particularly adapted for use in connection with automobile garages and the like.

Other objects and advantages to be derived from the use of my improved door operating mechanism will appear from the following detail description and the claims, taken with an inspection of the accompanying drawing, in whiclr- Figure l is a vertical sectional view taken a building showing my improved door-operating mechanism applied thereto, a portion of the front wall being broken away to show the roadway tappet, Fig. 2 is a top plan view of my door-operating mechanism, the building having walls being shown in section, Fig. 3 is a longitudinal sectional view taken on the line 3 3 of Fig. 2, looking in the direction of the arrows, and Fig. 4 is an, enlarged fragmentary elevational view of yieldable power-transmitting means which I. employ, Fig. 5 is an end elevation of the catch block.

Referring more particularly to the drawinvention may be readily` ing, in which similar characters of reference designate like and corresponding parts throughout the various views, l designates the front wall of a building 'to vention is applied, the roof being designated 2 and side walls 3. The doors 4 and' 5 are provided, and are hinged at 4 and 5 `to vswing outwardly in the present instance.-

My invention more specifically contemplates the provision of means operable by a vehicle entering the building to open the doors 4 and' 5, said means embodying opening and closing cables designated 6 and 7 respectively, said cables having connected therewith yieldable power-transmitting means comprising cylindrical members 8 and larly from the doors and in View of this ar rangement the provision ofthe sets of pulleys 12 and 13 hereinbefore described becomes necessary in order to bring the cables l0 and 11 into alinementwith said levers,l The lengths 16 trained beneath idlers 22'for an obvious ur-` pose. All'of lthe pulleys 12, 13, 14 and the idlers 22 are mounted on the front wall of the building. The free end of .the cable 11 is connected to the arm 2O at the point 18 hereinbefore set will hereinafter 17 is extended as at 3 and trained about an idler 25 mounted in a bearing bracket 26 on one of the walls 3 of the building. The free end of the section 23 is connected at 27`to the cable 11. cables 6 and 7 V 29 mounted on a shaft 30, said shaft being mounted in bearings 31 and provided witha roadway tappet 32 having an anti-,friction and 17 .pf'the cable l are forth for a purpose which appear. The cable section` The free lower ends vof the., are connected at-28 to a lever roller 33. The lever 29 and roadway tappet operating the device. dlers 40 are pro-v vided for the cables 6 and 7 at the point at ,Whchthe same leave the housing 37 VThe yieldable power-transmitting means 19 designated generally 8 and 9 comprise tubular members having coil springs 41 mounted therein, saidcoil springs having one end thereof connected to the closed end-'portion 424 o'f'the tubularmembers and having the 15 opposite Yend "portion thereof connected to a a 1disk 43. The cables 6 and 7 are connected tothe disks '43 and the cables 10` and 11'are connected to? thetubular members 8 and 9. A block 44 is mounted on the wall 1 of the .20 building;V and` secured in position b-y means of the screws or the like 45, for a purpose which will hereinafter appear. l provide means for maintaining the doors in open l 'and closed positions, 'said means automatically operable by the vehicle entering or vleaving the building. The means for locking the doors-open comprises a pair of pawls 46 pivoted at` 47 tothe front wall 1. The

if ."7 paWls are connected to a cable 48 by means '30-of extension cables .49 trained over pulleys 50,4 the cable 48 being trained over a pulley 51 and connected by`a bracket arm 52' to a kcable7.u The pawls 46 are provided with recesses 53 which are adapted to engage the 85'arms'20 and 21 When'the doors are in open.

position. i f The means for locking the doors in closed position comprises a rod 54 slidably mountfed in brackets .55 on the front wall 1 of the building, said arm having the lower endthereof bifurcated to rovide engaging portions 56 receivable in racketsV 57 carried by ythe doors.v A cable 58 trained over pulleys 'i `v`.59.a'ndlco'nnected by means of a bracket arm 7 45.y 60 to a cable 6 serves to disengage said arms 56' from the brackets 57 in a mannerwhich 'will hereinafter appear.

In.l operation, the doors are normally in `closed position as shown in the drawings, andas avehicle, 1n the present 'instance assuming it to be an automobile, approachesl `the door, `one of the forward wheels thereof depresses the roadway tappet in a direction toward thedoors. This swings the lever 30 and directs-a pull on thecable l6. The sudden shock ofthe vehicle wheel striking the roadway tappet is absorbed by the spring carried in the yieldable power transmitting device 8. Upon the initial movement of the 60 roadway tappet the disk 43 of the power transmitting device 8 is moved downwardly until lthe peripheral edge thereof engages- 'under the bottom marginal edge of the block 42. Thisy retains the diskl in the position shown and the strength of the spring carried by the member 8 exerts a: pull on the cable l0, this pull being transmitted through the sections 16 and 17 to the arms 2O and 21 swinging the doors to open position. However, previous to this upon the initial movement of the roadway tappet the cable 58 has been moved, this movement raising the locking member 54 and permitting the vdoors to belopened in the manner set forth. lNhen the doors have opened fully the pawls 46 engage the arms 20 and 21 retaining the doors in said position against the action of the coil springs 34 and 35. When the'tubular sections of the powertransmitting members 8 and 9 are drawn downwardly directing an Operation to their lowermost positions their vperipheral surfaces engage the block 42 disconnecting the disks .from said block to permit return of the cables to normal position. When closing the doors the roadway tappet is depressed in the Adirection opposite to the original movement thereof whereupon the'cable 7 will-bel actuated and an operation identical with tp foregoingl will ensue. This operationiis preceded by the unlocking of the doors, thatl is, the pawls l46 are disengaged from the arms 20 and 21 l permitting the doors to be imoved to closed position. The doors are automatically locked by engagement. of the lockingmemberte p with the brackets carried bythe doors.

From the above description taken in connection with the accompanying drawings, it is thought that a clear and comprehensive understanding ofthe construction, opera- 10e tion and advantages of my invention may be had, and while I have shown and.- described my invention as embodying a specific structure, l desire that it be understoodfthat may make such changes on said structureas do 'not depart from the spirit and scope of the invention v as claimed.

Whatl claim as new and desire to. secure by Letters-Patent is V- 1. In a device of the class described, a 11@ pair of doors, arms carried thereby, an operating lever, a pair of cables connected therewith, said cables having their free ends connected with said arms, yieldable powertransmitting means in said cables, means for engagementwith said arms to lock the doors in open position, and means engageable with the doors for locking the same in closed position,` both of said, locking means being operatively engaged with said cables to render` said locking means at times inoperative.

2. In a deviceof the classv described, power-transmitting means comprising acylinder, said cylinder being connected to` an object to be moved, a, disk associated withr said tubular member and a spring for connecting the same thereto, said disk being connected with a source of power, and -a `block for engagement with said disk when said disk is distended under action.

3. In a device of the cla-ss described, an spring, a retaining block for engagement operating leveiya pair of cables connected with said disk when said springs are disim theret0,' said cables being operatively contended under action, and means for locking nected to a pair of doors to move the same said doors. in open and closed positions.

5 to open or closed position',l yieldable powerlntestiniony whereof I affix my signaturev transmitting means interposed in said cables here-to. comprising tubular members, springs in said tubular members, disks connected with said ALBERT ER. 

